Additional Voices (voice)
Scooby-Doo's Creepiest Capers (2000)
Additional Voices (voice) (archive footage)
Scooby-Doo's Original Mysteries (2000)
(voice)
Scooby-Doo's Greatest Mysteries (1999)
The Adventures of Ronald McDonald: McTreasure Island (1990)
Hunk / Cliff / Rocky / Prince Lotor
Voltron: Fleet of Doom (1986)
Prince Abba-Dabba (voice)
Le 1001 favole di Bugs Bunny (1982)
Mr. Silika (voice)
The Flintstones Meet Rockula and Frankenstone (1979)
The Gentleman Tramp (1976)
The Hoober-Bloob Highway (1975)
State Coach
L'uomo più forte del mondo (1975)
Darzee the Tailorbird (voice)
Rikki-Tikki-Tavi (1975)
Shakespeare Loves Rembrandt (1974)
(Voice)
The World of Sid & Marty Krofft at the Hollywood Bowl (1973)
Robin Hoodnik / Alan Airedale / Whirlin' Merlin / Lord Scurvy / Friar Pork / Little John (voice) (as Len Weinrib)
The Adventures of Robin Hoodnik (1972)
Cap'n Noah Smitty (voice)
Yoghi e l'arca di Noè (1972)
Secretary Bird / Lion (voice)
Pomi d'ottone e manici di scopa (1971)
Roland / Rattfink (voice) (as Leonard Weinrib)
Cattle Battle (1971)
A Fink in the Rink (1971)
Roland / Rattfink / Narrator / Male Others (voice)
The Great Continental Overland Cross-Country Race (1971)
Trick or Retreat (1971)
Count (voice)
La storia di Oblio nel paese degli uomini con la testa a punta (1971)
Brom Bones (voice)
Tales of Washington Irving (1970)
Roland / Rattfink (voice)
Gem Dandy (1970)
Roland / Rattfink / Captain / King (voice)
War and Pieces (1970)
Roland Hood / Rattfink (voice)
Robin Goodhood (1970)
Boss / Roland / Rattfink / Rattfink's Uncle (voice)
Bridgework (1970)
Roland / Rattfink / Rotten Rattfink / Lawyer (voice) (as Leonard Weinrib)
The Foul Kin (1970)
Rattfink (voice)
A Taste of Money (1970)
Say Cheese, Please (1970)
Uncle Sam
Uncle Sam Magoo (1970)
A Pair of Sneakers (1969)
Sweet and Sourdough (1969)
Flying Feet (1969)
Hippy
Hurts and Flowers (1969)
Roland / Rattfink / Male Others (voice)
Hawks and Doves (1968)
Scotland Yard Detective (voice)
London Derriere (1968)
Garth
Good Times (1967)
Green Eyed Monster of Jealousy (voice) (uncredited)
Due assi nella manica (1966)
F-14 / Ladder Fireman (voice) (uncredited)
Questo pazzo, pazzo, pazzo, pazzo mondo (1963)
Truck Driver (as Len Weinrib)
Quel certo non so che (1963)
Policeman ("The Black Cat")
I racconti del terrore (1962)
Songs
Director
Out of Sight (1966)
Producer
Wild, Wild Winter (1966)
Beach Ball (1965)